'How to change the architecture of armv7l (yocto) to arm64/aarch64?

I have installed Yocto image in the Raspberry Pi 4B previously and I know that the current architecture is armv7l by using uname -m. However, I want to change the architecture to ARM64/AARCH64.
Anyone knows how to configure it?
By the way, ARM64 and AARCH64 are the same thing, right?

architectureyoctoarm64raspberry-pi4


Solution 1:[1]

As mentioned here, it is exactly the same thing. It's just a different notation based on the used compiler (LLVM => arm64 or GNU => aarch64) .

Solution 2:[2]

I have solved this issue by changing the machine type to "raspberrypi4-64", and it works fine now.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 LinderPi
Solution 2 chelsea

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